145381739274 has 32 divisors (see below), whose sum is σ = 323084010240. Its totient is φ = 48458558016.

The previous prime is 145381739273. The next prime is 145381739281. The reversal of 145381739274 is 472937183541.

145381739274 is a `hidden beast` number, since 1 + 4 + 538 + 1 + 7 + 39 + 2 + 74 = 666.

It is a super-2 number, since 2×145381739274² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145381739274.

It is not an unprimeable number, because it can be changed into a prime (145381739273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1833519 + ... + 1911165.

It is an arithmetic number, because the mean of its divisors is an integer number (10096375320).

Almost surely, 2^145381739274 is an apocalyptic number.

145381739274 is an abundant number, since it is smaller than the sum of its proper divisors (177702270966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145381739274 is a wasteful number, since it uses less digits than its factorization.

145381739274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112331 (or 112325 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 145381739274 in words is "one hundred forty-five billion, three hundred eighty-one million, seven hundred thirty-nine thousand, two hundred seventy-four".